Patents by Inventor Mitsuyoshi Okii

Mitsuyoshi Okii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of proliferating vesicular-arbuscular mycorrhizal fungi
    Patent number: 4945059
    Abstract: A method of proliferating vesicular arbuscular mycorrhizal fungi (i.e., VAM fungi) is disclosed which comprises inoculating VAM fungi in a soil medium containing a potato and a porous amphoteric ion exchanger, an accelerator and, optionally, in the presence of a VAM formation accelerator.An advantage gained by the use of VAM fungi in cultivation of plants can be found in the fact that smaller amounts of fertilizers need be used when combined with VAM fungi, as opposed to the use of fertilizers alone.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: July 31, 1990
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Mitsuyoshi Okii, Shunichi Ishijima
  • Method for protecting crops from suffering damages
    Patent number: 4231789
    Abstract: Crops are protected from suffering various damages by applying polyamine compounds such as long-chain alkylenediamines. By the use of said polyamine compounds, various effects can be obtained, for example, reduction of cold-weather damage or frost damage to crops, retardation of fading of green color of green crops, reduction of damage from photochemical oxidants to crops, retardation of wilting of leaves of crop plants, etc.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: November 4, 1980
    Inventors: Mitsuyoshi Okii, Tatsuya Onitake, Masanobu Kawai, Tetsuo Takematsu, Makato Konnai